Teams Api troubles

Occasional Visitor

1) I tried to get data through{group-id-for-teams}/channels/{channel-id}/messages. First page is returned OK. But when I use @odata.nextLink to get the next page with data it returned me Internal Server Error. I would like to ask, when the trouble will be fixed? 

2) Odata query parameters do not work for teams at all. The questin the same: when it will be fixed?

Also the main question : when teams api will be released Teams Api (when it changed from beta version to v1.0)?

Thank for the answers!